Leonardo Nam

James Marsden

Evan Rachel Wood

Ingrid Bolso Berdal

Jonathan Tucker and James Marsden

Julia Jones

Caroline Sjostrand

Luke Hemsworth

Rodrigo Santoro

Shannon Marie Woodward

Angela Sarafyan

Neil Jackson

Jeffrey Wright, Thandie Newton, Evan Rachel Wood, and James Marsden

Raymond Lee

Timothy Simons

Kiki Sukezane

Jimmi Simpson

Delos invited guests back to “Westworld” for the Season 2 premiere in Hollywood on Monday night, six days ahead of the new episode’s HBO debut. While stars like Evan Rachel Wood, Thandie Newton, James Marsden, and Jeffrey Wright partied with drone hosts, other big names came out to play as well, including Katy Perry and Liam Hemsworth, the latter of whom was out to support his brother Luke Hemsworth.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.

“Westworld” returns for its second season on Sunday, April 22 at 9 p.m. ET on HBO.